(ded4a3e0a) v0.9.0.7
This commit is contained in:
Joonas Rikkonen
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// MonoGame - Copyright (C) The MonoGame Team
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// This file is subject to the terms and conditions defined in
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// file 'LICENSE.txt', which is part of this source code package.
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using Microsoft.Xna.Framework.Content.Pipeline.Graphics;
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using Microsoft.Xna.Framework.Graphics.PackedVector;
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using FreeImageAPI;
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using System.IO;
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using MonoGame.Utilities;
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namespace Microsoft.Xna.Framework.Content.Pipeline
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{
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/// <summary>
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/// Provides methods for reading texture files for use in the Content Pipeline.
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/// </summary>
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[ContentImporter(".bmp", // Bitmap Image File
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".cut", // Dr Halo CUT
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".dds", // Direct Draw Surface
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".g3", // Raw Fax G3
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".hdr", // RGBE
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".gif", // Graphcis Interchange Format
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".ico", // Microsoft Windows Icon
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".iff", // Interchange File Format
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".jbg", ".jbig", // JBIG
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".jng", ".jpg", ".jpeg", ".jpe", ".jif", ".jfif", ".jfi", // JPEG
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".jp2", ".j2k", ".jpf", ".jpx", ".jpm", ".mj2", // JPEG 2000
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".jxr", ".hdp", ".wdp", // JPEG XR
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".koa", ".gg", // Koala
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".pcd", // Kodak PhotoCD
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".mng", // Multiple-Image Network Graphics
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".pcx", //Personal Computer Exchange
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".pbm", ".pgm", ".ppm", ".pnm", // Netpbm
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".pfm", // Printer Font Metrics
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".png", //Portable Network Graphics
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".pict", ".pct", ".pic", // PICT
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".psd", // Photoshop
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".3fr", ".ari", ".arw", ".bay", ".crw", ".cr2", ".cap", ".dcs", // RAW
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".dcr", ".dng", ".drf", ".eip", ".erf", ".fff", ".iiq", ".k25", // RAW
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".kdc", ".mdc", ".mef", ".mos", ".mrw", ".nef", ".nrw", ".obm", // RAW
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".orf", ".pef", ".ptx", ".pxn", ".r3d", ".raf", ".raw", ".rwl", // RAW
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".rw2", ".rwz", ".sr2", ".srf", ".srw", ".x3f", // RAW
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".ras", ".sun", // Sun RAS
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".sgi", ".rgba", ".bw", ".int", ".inta", // Silicon Graphics Image
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".tga", // Truevision TGA/TARGA
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".tiff", ".tif", // Tagged Image File Format
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".wbmp", // Wireless Application Protocol Bitmap Format
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".webp", // WebP
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".xbm", // X BitMap
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".xpm", // X PixMap
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DisplayName = "Texture Importer - MonoGame", DefaultProcessor = "TextureProcessor")]
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public class TextureImporter : ContentImporter<TextureContent>
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{
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/// <summary>
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/// Initializes a new instance of TextureImporter.
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/// </summary>
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public TextureImporter( )
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{
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}
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/// <summary>
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/// Called by the XNA Framework when importing a texture file to be used as a game asset. This is the method called by the XNA Framework when an asset is to be imported into an object that can be recognized by the Content Pipeline.
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/// </summary>
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/// <param name="filename">Name of a game asset file.</param>
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/// <param name="context">Contains information for importing a game asset, such as a logger interface.</param>
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/// <returns>Resulting game asset.</returns>
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public override TextureContent Import(string filename, ContentImporterContext context)
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{
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var ext = Path.GetExtension(filename).ToLower();
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// Special case for loading some formats
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switch (ext)
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{
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case ".dds":
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return DdsLoader.Import(filename, context);
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case ".bmp":
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return LoadImage(filename);
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}
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var output = new Texture2DContent { Identity = new ContentIdentity(filename) };
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FREE_IMAGE_FORMAT format = FREE_IMAGE_FORMAT.FIF_UNKNOWN;
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var fBitmap = FreeImage.LoadEx(filename, FREE_IMAGE_LOAD_FLAGS.DEFAULT, ref format);
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//if freeimage can not recognize the image type
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if(format == FREE_IMAGE_FORMAT.FIF_UNKNOWN)
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throw new ContentLoadException("TextureImporter failed to load '" + filename + "'");
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//if freeimage can recognize the file headers but can't read its contents
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else if(fBitmap.IsNull)
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throw new InvalidContentException("TextureImporter couldn't understand the contents of '" + filename + "'", output.Identity);
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BitmapContent face = null;
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var height = (int) FreeImage.GetHeight(fBitmap);
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var width = (int) FreeImage.GetWidth(fBitmap);
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//uint bpp = FreeImage.GetBPP(fBitmap);
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var imageType = FreeImage.GetImageType(fBitmap);
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// Swizzle channels and expand to include an alpha channel
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fBitmap = ConvertAndSwapChannels(fBitmap, imageType);
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// The bits per pixel and image type may have changed
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uint bpp = FreeImage.GetBPP(fBitmap);
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imageType = FreeImage.GetImageType(fBitmap);
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var pitch = (int) FreeImage.GetPitch(fBitmap);
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var redMask = FreeImage.GetRedMask(fBitmap);
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var greenMask = FreeImage.GetGreenMask(fBitmap);
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var blueMask = FreeImage.GetBlueMask(fBitmap);
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// Create the byte array for the data
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byte[] bytes = new byte[((width * height * bpp - 1) / 8) + 1];
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//Converts the pixel data to bytes, do not try to use this call to switch the color channels because that only works for 16bpp bitmaps
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FreeImage.ConvertToRawBits(bytes, fBitmap, pitch, bpp, redMask, greenMask, blueMask, true);
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// Create the Pixel bitmap content depending on the image type
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switch(imageType)
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{
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//case FREE_IMAGE_TYPE.FIT_BITMAP:
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default:
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face = new PixelBitmapContent<Color>(width, height);
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break;
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case FREE_IMAGE_TYPE.FIT_RGBA16:
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face = new PixelBitmapContent<Rgba64>(width, height);
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break;
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case FREE_IMAGE_TYPE.FIT_RGBAF:
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face = new PixelBitmapContent<Vector4>(width, height);
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break;
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}
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FreeImage.UnloadEx(ref fBitmap);
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face.SetPixelData(bytes);
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output.Faces[0].Add(face);
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return output;
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}
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/// <summary>
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/// Expands images to have an alpha channel and swaps red and blue channels
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/// </summary>
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/// <param name="fBitmap">Image to process</param>
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/// <param name="imageType">Type of the image for the procedure</param>
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/// <returns></returns>
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private static FIBITMAP ConvertAndSwapChannels(FIBITMAP fBitmap, FREE_IMAGE_TYPE imageType)
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{
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FIBITMAP bgra;
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switch (imageType)
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{
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// Return BGRA images as is
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case FREE_IMAGE_TYPE.FIT_RGBAF:
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case FREE_IMAGE_TYPE.FIT_RGBA16:
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break;
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// Add an alpha channel to BGRA images without one
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case FREE_IMAGE_TYPE.FIT_RGBF:
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bgra = FreeImage.ConvertToType(fBitmap, FREE_IMAGE_TYPE.FIT_RGBAF, true);
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FreeImage.UnloadEx(ref fBitmap);
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fBitmap = bgra;
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break;
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case FREE_IMAGE_TYPE.FIT_RGB16:
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bgra = FreeImage.ConvertToType(fBitmap, FREE_IMAGE_TYPE.FIT_RGBA16, true);
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FreeImage.UnloadEx(ref fBitmap);
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fBitmap = bgra;
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break;
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// Add an alpha channel to RGB images
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// Swap the red and blue channels of RGBA images
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default:
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// Bitmap and other formats are converted to 32-bit by default
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bgra = FreeImage.ConvertTo32Bits(fBitmap);
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SwitchRedAndBlueChannels(bgra);
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FreeImage.UnloadEx(ref fBitmap);
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fBitmap = bgra;
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break;
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}
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return fBitmap;
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}
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/// <summary>
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/// Switches the red and blue channels
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/// </summary>
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/// <param name="fBitmap">image</param>
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private static void SwitchRedAndBlueChannels(FIBITMAP fBitmap)
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{
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var r = FreeImage.GetChannel(fBitmap, FREE_IMAGE_COLOR_CHANNEL.FICC_RED);
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var b = FreeImage.GetChannel(fBitmap, FREE_IMAGE_COLOR_CHANNEL.FICC_BLUE);
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FreeImage.SetChannel(fBitmap, b, FREE_IMAGE_COLOR_CHANNEL.FICC_RED);
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FreeImage.SetChannel(fBitmap, r, FREE_IMAGE_COLOR_CHANNEL.FICC_BLUE);
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FreeImage.UnloadEx(ref r);
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FreeImage.UnloadEx(ref b);
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}
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// Loads BMP using StbSharp. This allows us to load BMP files containing BITMAPV4HEADER and BITMAPV5HEADER
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// structures, which FreeImage does not support.
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TextureContent LoadImage(string filename)
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{
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var output = new Texture2DContent { Identity = new ContentIdentity(filename) };
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int width, height, comp;
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byte[] data = null;
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using (var stream = File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.Read))
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data = ImageReader.Read(stream, out width, out height, out comp, Imaging.STBI_rgb_alpha);
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var face = new PixelBitmapContent<Color>(width, height);
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face.SetPixelData(data);
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output.Faces[0].Add(face);
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return output;
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}
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}
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}
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